(a) When x is 1, what is the value of y?

(b)
When x is -1.5, what is the value of y?
and
(c)
When y is 8.5, what is the value of x?

Divide. write in the simplest form. 4 1/6 divided by 10

1. writing an equation for an exponential function by 2. a piece of paper that is 0.6 millimeter thick is folded. write an equation for the thickness t of the paper in millimeters as a function of the number n of folds. the equation is t(n)= 3. enter an equation for the function that includes the points. (-2, 2/5) and (-1,2)

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827